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diff --git a/doc/RelNotes/v1.42.txt b/doc/RelNotes/v1.42.txt new file mode 100644 index 0000000..f0d2dd2 --- /dev/null +++ b/doc/RelNotes/v1.42.txt @@ -0,0 +1,1690 @@ +E2fsprogs 1.42.13 (May 17, 2015) +================================ + +Fixed a potential buffer overflow while closing a file system in +libext2fs. (CVE-2015-1572, Addresses Debian Bug: #778948) + +Fixed a bug which could cause e2fsck to corrupt Hurd file systems. +(Addresses Debian Bug: #760275) + +Fixed a deadlock which occurs when using systemd and e2fsck.conf's +logging feature. (Addresses Debian Bug: #775234) + +Fixed a bug which could cause programs using libext2's inode table +scanning functions from crashing on certain corrupted file systems. +(Addresses Debian Bug: #773795) + +Fixed dumpe2fs so it won't crash if the user doesn't specify a block +device (file system). (Addresses Debian Bug: #764293) + +Fixed e2fsck so if it notices unexpected HTREE blocks in pass 2, it +will report the correct directory inode containing the inconsistency. + +If e2fsck fails to grow the dir_info structure due realloc(3) not +having enough memory, it will now fail with explanatory message +instead of staggering on failing with a confusing internal error +messages. + +The tune2fs program will zero out the superblock journal backup +information when removing a journal from a file system. + +The mke2fs program now enables the large_file feature by default. + +Fixed a bug which could cause badblocks to crash if there are millions +and millions of bad blocks. + +Fixed some use-after-free bug in resize2fs and e2fsck. + +Fixed a memory leak in tune2fs. + +Fixed some bigendian bugs that had crept into both indirect and extent +handling inside libext2fs. + +Updated/fixed various man pages. + +Update Esperanto, German, and Spanish translations. Added Danish +translation. + +Programmer's Notes +------------------ + +Fixed coverity, sparse, gcc -Wall, and clang warnings/nits. + +Clean up some build system problems (build failures with various +configure options, fix Posix portability issues, etc.) + +The functions ext2fs_inode_alloc_stats[2]() and +ext2fs_block_alloc_stats[2]() now check the inode and block numbers +passed to them, to avoid crashes caused by buggy callers. + +The libext2fs directory iterator will now check for an invalid +directory entry length instead of possibly walking off the end of the +directory buffer. + + +E2fsprogs 1.42.12 (August 25, 2014) +=================================== + +Fix various e2fsck bugs when trying to repair bigalloc file systems. + +E2fsck can now repair a file system with an overly large +s_first_meta_bg field, which had previously caused all e2fsprogs +programs to crash when trying to open such a file system. + +Fix e2fsck so that it can correctly fix a number of rare file system +corruptions that were discovered when using a file system fuzzer. + +Fix e2fsck so it does not try to write back block group descriptors if +they have not been modified. + +Mke2fs program will now place metadata blocks in the last flex_bg so +they are contiguous. This reduces free space fragmentation in a +freshly created file system, as well as allowing mke2fs commands which +request extremely large flex_bg size to succeed. + +Mke2fs now creates hugefiles more efficiently (with fewer extent tree +blocks). + +Fix a 32/64-bit overflow bug that could cause resize2fs to loop +forever. (Addresses-Launchpad-Bug: #1321958) + +The resize2fs program will now use much less memory when resizing very +large file systems. + +Fix a bug which could cause resize2fs to get confused and produce a +corrupted file system when shrinking a file system that had been +previously expanded and converted to use the meta_bg file system +format, but which no longer needs to use the meta_bg file system +format any longer. This typically happened with large (> 16TB) file +systems. (Addresses Debian Bug: #756922) + +The e4defrag program will now defrag backwards-allocated files. + +Fix tune2fs updating UUID's when manipulating file systems with +external journals (both the file system and journal UUID). + +Fix tune2fs so it can remove an external journal for file systems with +a 1k block size. + +Add a new debugfs command, "inode_dump", which prints the inode in hex +and ASCII format. + +The debugfs's "set_inode_field" will now automatically allocate blocks +for indirect blocks and extent tree blocks. + +Fix debugfs's "set_inode_field" so can properly handle +"block[IND|DIND|TIND]". + +The debugfs "rdump" command will now take multiple source arguments. + +Fixed a double close(2) bug in "rdump" and "rdump -p". + +Fix debugfs's argument parsing for the freefrag command. + +Fix filefrag to properly handle using the FIBMAP ioctl (with -B). +(Addresses Launchpad Bug: #1356496) + +Clarified messages that were confusing users in debugfs, e2fsck, +mke2fs, and resize2fs (Addresses Debian Bugs: #758029, #757543, +#757544) + +Dumpe2fs will now complain if extra arguments are given to it. +(Addresses Debian Bug: #758074) + +Updated/fixed various man pages. (Addresses-Debian-Bug: #726760) + +Update Czech, Dutch, French, Polish, Spanish, Swedish, Ukrainian, and +Vietnamese translations. + +Programmer's Notes +------------------ + +The Unix I/O layer will now use pread[64]/pwrite[64] to reduce the +number of system calls issued. + +Fixed profiled build. + +The libext2fs library will now more efficiently split an extent tree +index block when appending to an end of a file. + +Fixed free block accounting for 64-bit file systems. + +Add a new function ext2s_inode_size_set() which takes care of all of +the required feature flag modifications. + +The regression tests no longer require the presence of the md5sum +program. + +Fix build failure on MIPS platforms on Debian (Addresses Debian Bug: +#754605) + +Fix various Coverity warnings (#1225003, #1229243, #1252003) + + +E2fsprogs 1.42.11 (July 9, 2014) +================================ + +Add support so that mke2fs can create hugefiles so that they are +aligned relative to the beginning of the disk, instead of relative to +the beginning of the partition, using the mke2fs.conf configuration +parameter "hugefiles_align_disk". + +Fix a bug which causes e2fsck to abort a journal replay on a file +system with bigalloc enabled. (Addresses Debian Bug: #744953) + +Add sanity checks so that mke2fs will refuse insanely large flex_bg +counts specified by the -G option. Insanely large flex_bg sizes can +result in a file system which can't be unmounted, or with extremely +pessimal metadata layouts. + +The mke2fs program will provide a better metadata layout for +moderately large (but believable) flex_bg counts, such as 133,072. + +The mke2fs program will also check the kernel version number to +determine whether the lazy_itable_init option is supported, so that +lazy inode table initialization can be used even if the ext4 is +compiled as a module which isn't loaded at the time that mke2fs is +run. + +Add description of ext4's mount options to the ext4 section 5 man +page. + +Improve the chattr man page and clean up the chattr usage message. + +E2fsck will now automatically fix a last mount time or last write time +which is in the future in preen mode, instead of aborting the fsck +check. + +Mke2fs will now check the file system revision number requested by the +command line, and reject it if it is too large. A file system with an +unsupported revision number will not be accepted by any of the other +file system tools, and this command line option is rarely used, so +let's try to help the user not shoot their own foot off. + +The debugfs program can now set the error count and associated +first_error and last_error fields in the superblock using the +set_super_value command. + +Resize2fs will not try to calculate the minimum size of a file system +if it contains errors. Otherwise a very badly corrupted file system +image can cause the minimum size calculation to loop forever. Since +resize2fs will not allow a file system marked as containing errors to +be resized. It's pointless to calculate the minimum size, so just +skip it. + +Fixed a typo in one of mke2fs's error message. + +If filefrag runs into an error, it will continue processing the rest +of the files specified on the command line, but then exit with an +error code. + +Filefrag now prints some additional new flags (such as +FIEMAP_EXTENT_ENCODED), and print unknown flags as hex values. + +Fixed support in filefrag for files with > 2**32 blocks on 32-bit +platforms. + +Fixed a file descriptor leak in debugfs when copying files. + +Fixed a regression introduced in 1.42.10 which caused mke2fs to fail +to create file systems larger than 2GB on 32-bit platforms. +(Addresses Red Hat Bugzilla: #1099892, Debian Bug: #752107) + +Add Esperanto and Ukrainian translations, and update Czech, Dutch, +French, German, Italian, Polish, Swedish, and Vietnamese +translations. + +Fixed various compiler warnings. + + +Programmer's Notes +------------------ + +The gcc "-checker" option has been long deprecated, so remove support +from e2fsprogs. It was causing a few people to be confused when they +tried enabling the configure option. + +Update to the latest version of the config.status and config.rpath +files, as well as newer versions of the autoconf files in aclocal.m4. +Also, move the e2fsprogs-specific macros to acinclude.m4, which allows +people who want to use autoreconf to do so. + +Make the use of strptime() function in debugfs to be more portable to +fix regression test failures for FreeBSD and MacOS. + +A few miscellaneous changes designed to make life easier for +translators. + +Fix the f_quota test and some Makefile dependencies if quota support +is not enabled. + +Fix cross-compilation support, which got broken in 1.42.10. +(Addresses Debian Bug: #753375) + +Delete lib/ext2_types.h on a make clean, and build it as necessary. + +Add a debug program used for libext2fs unit tests. + +Clean up the tests so that it avoids using GNU-specific behaviour in +mktemp. Make sure the temporary files are cleaned up if the tests are +interrupted. + +Add a new ext2fs_close_free() helper function which automatically +takes care of freeing the ext2_filsys structure even if ext2fs_close() +returns an error. + + +E2fsprogs 1.42.10 (May 18, 2014) +================================ + +Mke2fs now creates file systems in regular files (which is very often +used when maintaining virtual machine images) without requiring the +user to use the force option. In addition, the mke2fs output has been +made much less verbose and only displays information that users will +be more likely to find useful by default. + +Mke2fs now will ask the user to confirm that they want to continue +before wiping out a pre-existing file system, partition table, or LVM +physical volume. + +Mke2fs now has the ability to create file systems where all the +metadata is located at the very beginning of the device. This can be +useful for flash devices which have SLC flash at the beginning of the +disk, for FAT compatibility, for example. As part of this, mke2fs and +tune2fs can control the location of the data blocks used by the +journal inode. In addition, the new sparse_super2 feature allows for +even fewer (anywhere from zero to two) backup superblocks. + +Mke2fs now uses much less CPU when allocating the blocks used for very +large file systems. + +Mke2fs can now support creating a file system at an offset. This can +be useful when creating a disk image for virtual machines (Addresses +Debian Bug: #497984) + +Previously, e2fsck had a number of very serious bugs when checking a +file system which used the new the quota file system option (where the +quota inodes were stored in hidden inodes) and the quota inode was +inconsistent with the actual usage data. This problem was documented +in https://ext4.wiki.kernel.org/index.php/Quota. These problems have +been fixed in 1.42.10, so the quota should be safe to use with +e2fsprogs 1.42.10. + +Fixed in a bug in resize2fs which could cause shrink operation fail in +the unlikely situation when the inode table needs to be moved to a +location before the current location. + +Resize2fs now has a much more accurate (and less conservative) +estimation of how far the file system can be shrunk. This allows a +mostly empty filesystem which is a few terabytes, to be shrunk to a +few megabytes in a single resize2fs -M operation. + +E2fsck will now force a full file system check if there are any file +system inconsistencies detected in the super block. + +The filefrag program will now display the shared extent flag, which is +used by file systems such as btrfs. + +If the number of inodes in the file systems is larger than the time +that file system was created (as measured by the number of seconds +since January 1, 1970) e2fsck would print a scary (but otherwise +harmless) warning of file system corruption for each inode in the +orphan list. This false positive has been fixed. + +The e4defrag program has been fixed so it will no longer refuse with +filesystem with the 64-bit or the bigalloc feature enabled. + +The logsave program will print a much less scary message which could +lead users to believe something has gone very wrong with e2fsck exits +with a non-zero exit status (since this is normal after e2fsck has +automatically fixed a file system corruption during a preen +operation). (Addresses Debian Bug: #468821) + +When creating a file system which is larger than 16TB, the +resize_inode option must be disabled -- since the resize_inode simply +doesn't support reserving metadata block numbers which is larger than +32 bits. The mke2fs program does this automatically if the file +system size is determined automatically. It will now also do this if +the file size is specified explicitly. + +Fixed bugs associated with resize2fs and shrinking bigalloc file +systems. + +The e2fsck program will no longer try to add a UUID on a mounted file +system with checksums enabled, since this could leave the file system +checksums broken. + +Tune2fs will allow the removal of an external journal from file system +which is marked as needing the journal replayed when the force ("-f") +option is given twice. (Addresses Debian Bug: #559301) + +Tune2fs will no longer support enabling sparse_super if the meta_bg +file system feature is enabled, since it could result in data loss. +In practice, all modern file systems have sparse_super is enabled, so +it's not worth trying to change how tune2fs handles enabling the +sparse_super feature. + +Fixed support for 1k block file systems with the meta_bg feature. + +When the superblock is corrupt, e2fsck can't figure out the location +of the alternate superblock. Unfortunately, the routine that +calculates the location of the alternate superblock uses 8193 if it +can't figure this out, so the message printed by e2fsck always +suggests using "e2fsck -b 8193". This message has been fixed to +suggest both the superblock location of 8193 and and 32768. +(Addresses Debian Bug: #719185) + +The lookback mount detection code that was introduced in 1.42.9 wasn't +actually compiled in due to an autoconf oops, so it's fixed now in +1.42.10. (Addresses Debian Bug: #497984) + +A bug introduced in 1.42.9 would cause debugfs to print two error +messages if it found an error while parsing a user-supplied block +number. This has been fixed in 1.42.10. + +Update Czech, Dutch, French, German, Polish, Spanish, Swedish, and +Vietnamese translations. (Addresses Debian Bug: #703048) + +Updated/fixed various man pages. (Addresses Debian Bugs: #719189, +#719184) + +Fixed various Debian Packaging Issues. (Addresses Debian Bug: #718725) + + +Programmer's Notes +------------------ + +Fixed a lot of coverity, sparse, gcc -Wall, and clang warnings/nits. + +Allow the location of pkg-config files to be specified independent of +the libdir location via a makefile variable. + +Fixed parse-types.sh not to complain when cross-compiling and the +sizes of types are different between the target architecture and the +architecture of the build system + +Allow the regression test suite to work correctly on systems which do +not have the "truncate" or "mksawp" programs. + +Allow e2fsck to build correctly on systems (such as Android) that do +not have the signal.h file. + +E2fsprogs now has code coverage testing which can be enabled using +"configure --enable-gcov". + +The libe2p.h header file can now be used included by C++ programs. + +The profile/config file used by e2fsck and mke2fs will interpret +numbers with a leading 0 character to mean that they should be +interpreted as an octal integer. + +The extent handling functions in libext2fs have been improved so they +have proper rollback when there is an error splitting an extent. Also +fix a number of bugs when punching holes in files, and fix an +off-by-one bug when inserting an extent into an empty inode. + +The libext2fs library now handles the support of BLOCK_UNINIT by +clearing the portion of block bitmap when it is loaded, instead of +when it is used. This reduces the chances of bugs, and and simplifies +the code. It also means that debugfs will properly show that blocks +in uninitialized block groups as being unused when using the testb +command. + +The e4defrag program will try to use fadvise64 or posix_fadvise64() if +it is present, which allows 64-bit offsets on 32-bit systems. + + +E2fsprogs 1.42.9 (December 28, 2013) +==================================== + +Mke2fs will detect an attempt to create a file system on a loop +mounted file and complain without the -FF option. Also fixed mke2fs +so it allows the creation of a file system on a mounted device with +two -F options, as documented in the man page, instead of three -F +options. + +Fixed a large number of bugs in resize2fs, e2fsck, debugfs, and +libext2fs to correctly handle bigalloc and 64-bit file systems. There +were many corner cases that had not been noticed in previous uses of +these file systems, since they are not as common. Some of the bugs +could cause file system corruption or data loss, so users of 64-bit or +bigalloc file systems are strongly urged to upgrade to e2fsprogs +1.42.9. + +The tune2fs program will now not allow changing the uuid on a mounted +file system which has the uninit_bg feature enabled. This avoids a +nasty race where the kernel and tune2fs are both retrying rewrite the +group descriptors at the same time, with different ideas about what +the UUID should be. + +When e2fsck is rehashing an extent-mapped directory, it's possible +(although very rare) that an extent block will need to be allocated; +fix e2fsck to make sure that the block gets marked as used. + +Mke2fs will now properly set the LARGE_FILE feature when creating a +journal >= 2GB --- which can happen when using 64k block size. + +Fixed debugfs so that its freei command will correctly handle a request +to free a range of consecutive inodes. + +Fixed 2fsck so it will not erroneously complain that an external journal +is invalid if it is exactly 2**32 blocks. + +Fixed e2fsck so it won't try checking for, and adding, a missing +lost+found directory when running in read-only mode. + +Fixed e2image so that progress information won't get leaked to stdout. +(Addresses Red Hat Bugzilla: #1327329) + +Fixed e2image to avoid some buffer overruns which would cause it to when +creating a "standard (non-raw, non-qcow2) image file. Standard +e2image files are actually very rarely used, so we didn't notice when +the changes to enable the qcow2 format broke this e2image mode. + +Fixed mke2fs so that the extended option "-E resize=NNN" will not turn +on the resize_inode feature when the meta_bg feature is set, since +these two features can not be set at the same time. + +Fixed tune2fs so that when it disables the quota feature, it updates all +of the backup superblocks. + +Fixed dumpe2fs that would cause it to abort when run using an image file +when trying to print the journal information (which is not present in +an e2image created image file). + +Fixed a potential integer overflow in e2reefrag. +(Addresses-Debian-Bug: #718205) + +Enhance debugfs so that when copying a sparse file from a native file +system into the file system image using the "write" command, it will +create a sparse file into the destination file system. + +Enhanced debugfs so it can support a command line which is up to 8k +long. + +E2image will refuse (unless the -f option is specified to force the +issue) to create a raw or qcow image using a mounted file system, +unless the -f option is specified to force the issue. + +E2image has been optimized for using it to efficiently copy a file +system by only copying the allocated blocks, by using the options -ra. +New options (-o and -O) have been added so that a source and +destination offset can be given. The -p option will print progress +information so the user will know how far along the copy is going. +And finally, the new option -c is useful for updating a file system on +an SSD, by avoiding unnecessary writes. E2image can also shift a file +system image by doing an in place move. + +Fix a regression introduced in 1.42.8 which would cause e2fsck to +erroneously report uninitialized extents past the EOF (as determined by +i_size) to be invalid. + +Fixed resize2fs so under a corner case when an inode has a complex +extent tree, it will not corrupt an interior node in the extent tree. + +Fixed resize2fs which would sometimes corrupt a file system when +shrinking a file system to a minimum size using resize2fs -M. +(Addresses Debian Bug: #660793) + +Fixed resize2fs so that it will relocate inode table blocks if this +becomes necessary when shrinking the file system. + +Fixed resize2fs and e2fsck so they will not crash when hit a failure +while operating on a file system with the MMP feature enabled. + +Fixed a bug in debugfs which caused it create an invalid inode when +trying to write a zero-length file. + +E2fsck will no longer crash if it tries to delete an invalid +extent-mapped symlink. + +E2fsck will no longer crash if it comes across an directory which is +larger than 2GB (which is not allowed in valid file systems). + +Fixed debugfs's help texts to fully document all options and otherwise +be more helpful. + +Updated/fixed various man pages. (Addresses Debian Bugs: #586218, +#669730, #698076) + +Fixed various Debian Packaging Issues (#698879, #721365) + + +Programmer's Notes +------------------ + +Fix sparse, gcc -Wall and clang nits. + +Update config.{guess,sub} to the latest version + +Fixed various memory and file descriptor leaks on various error paths, +as well as some missing error return checks, which were found using +Coverity. + +Run sparse against source files when building e2fsprogs with 'make +C=1'. If instead C=2, it configures basic ext2 types for bitwise +checking with sparse, which can help find the (many many) spots where +conversion errors are (possibly) happening. + +Allow the regression test to be run in chrooted environments where +/etc/mtab might be missing. + +The ext2fs_punch() function, which was introduced in 1.42, was broken +in many ways, but this was never noticed since it wasn't used for +anything significant. Some of the bugs include failing when trying to +punch a completely sparse file, failing when punching an extent-mapped +inode when the starting block was at the beginning of the inode, and +not being able to punch a single block (where start_blk == end_block). +It also didn't handle being passed an invalid, too-large ending block +number, and didn't handle properly terminate at the right place when +operating on an indirect-mapped inode. + +Fixed some minor typo's in the error catalog for libext2fs. + +Fixed ext2fs_file_set_size2() so that if it truncates an inode by +setting the file size, to zero the rest of the block to the end of the +file, so that if an ext4 FUSE driver tries to extended the file, that +we don't avoid stale data from being returned. + +Fixed ext2fs_bmap() to disallow clients from trying to map or set +logical blocks which are larger than what an extent-mapped or indirect +block-mapped inode can allow. + +If debugfs (or some userspace program using libext2fs) creates a file +which is larger than 2GB, make sure the large_file feature flag gets +set. + +Fix a bug in ext2fs_link() where if there is multiple empty slots in the +directory which are large enough, the directory entry could get +inserted more than once in the directory. + +If quota support is disabled (which is the default), make sure that +all traces of the quota support is removed from usage messages, man +pages, and tune2fs must not be able to enable the quota file system +feature. (Addresses Red Hat Bugzilla: #1010709) + +The ext2fs_file_write() now updates i_size on a successful write, +instead of only updating i_size wen the file is closed via +ext2fs_file_close(). + +Added a shell script, populate-extfs.sh which uses debugfs to populate +an ext2/3/4 file system image from a given directory. It is similar +to the genext2fs program, but it supports ext3 and ext4 file system. + +Add changes to the libext2fs library to support block group +descriptors larger than 64 bytes (for future compatibility). + +Fixed an off-by-one bug in ext2fs_file_set_size2() so that it will not +leave an extra block in the file when truncating the file down to +size. + +The html version info pages are now built using makeinfo --html +instead of the unmaintained and now-obsolete texi2html program. + + +E2fsprogs 1.42.8 (June 20, 2013) +================================ + +As a part of mke2fs's option parsing cleanup, the use of the -R option +will give a warning that it is deprecated (it has been so documented +since 2005) and -E should be used instead. + +Mke2fs will not give warnings about the bigalloc and quota options in +quiet mode. + +If an invalid journal size is given to mke2fs, it will now complain +and exit sooner. + +Debugfs was erroneously giving spurious error messages for certain +extent_inode subcommands which take arguments (split_node, +replace_node, and insert_node). This has been fixed. + +Fix the parsing of the 's' (sectors) in parse_num_blocks2, which among +other programs is used by mke2fs. + +Change mke2fs so that it does not set the root directory to the real +uid/gid of the mke2fs process. Add the extended option root_owner to +override this behavior. + +Fix resize2fs when shrinking file systems to make sure that bitmap +blocks aren't left outside the bounds of the shrunken file system. +This could happen with flex_bg file systems that were grown using +the old online resizing algorithm. + +E2fsck will now detect and repair corrupted extent trees which contain +invalid extents at the end of the extent tree leaf block. + +E2fsck will now longer complain about zero length extended attribute +values. + +Fix a regression introduced in e2fsprogs v1.42 which caused e2image -s +to crash. + +Add safety check so tune2fs will not attempt to set the inode size to +be larger than the block size. + +Fix e2fsck so it can check a read-only root file system with an +external journal. (Addresses Debian Bug: #707030 + +Fix off-line resizing of file systems with flex_bg && !resize_inode +(Addresses Debian Bug: #696746) + +Fix e2image with large (> 32-bit) file systems (Addresses Debian Bug: +#703067) + +Enhance chattr to allow clearing the extent flag if the kernel allows +migrating extent based files to use indirect blocks. + +Update German translation. + +Updated/fixed various man pages. (Addresses Debian Bugs: #712429, +#712430, #707609) + +Fixed various Debian Packaging Issues (Addresses Debian Bug #708307) + +Programmer's Notes +------------------ + +Use secure_getenv() in preference to __secure_getenv(). + +Optimize CPU utilization of ext2fs_bg_has_super(). + +Fix ext2fs_llseek() on 32-bit i386 systems to work correctly when +SEEK_CUR is used with large files. + +The ext2fs_read_inode_full() function will no longer use +fs->read_inode() if the caller has requested more than the base 128 +byte inode structure and the inode size is greater than 128 bytes. + +Fix build failure with --enable-jbd-debug. + +Clean up filtering of outputs for the regression tests by using a +common sed script. + +Fix gcc -Wall and clang nits. + + +E2fsprogs 1.42.7 (January 21, 2013) +=================================== + +Add warnings to mke2fs, resize2fs, and tune2fs that the bigalloc and +quota features are still under development. For more information +please see: + * https://ext4.wiki.kernel.org/index.php/Bigalloc + * https://ext4.wiki.kernel.org/index.php/Quota + +Add some new options to filefrag from Lustre's patches to e2fsprogs: + * add -k option to print extents in kB-sized units (like df -k) + * add -b {blocksize} to print extents in blocksize units + * add -e option to print extent format, even when FIBMAP is used + * add -X option to print extents in hexadecimal format + +Fix resize2fs so that it can handle off-line resizes of file systems +with the flex_bg feature but without a resize_inode (or if we run out +of reserved gdt blocks). This also fixes a problem where if the user +creates a filesystem with a restricted number of reserved gdt blocks, +an off-line resize which grows the file system could potentially +result in file system corruption. + +Fix a resize2fs bug which could cause it to corrupt bigalloc file +systems when doing an off-line resize. + +Further optimize resize2fs so it doesn't use quite as much CPU when +resizing very large file systems. + +Fixed 32-bit overflow bugs which could cause resize2fs to fail and +possibly corrupt the file system while resizing 64-bit file systems. + +Fix a bug in mke2fs where parsing "-E resize=NNN" will result in a +mke2fs crash due to a divide-by-zero if the 64bit file system feature +is enabled. + +Add better error checking to mke2fs to check for invalid parameters +when creating bigalloc file system. + +When creating bigalloc filesystems, the -g option to mke2fs will now +specify the number of clusters per block group. + +Add to debugfs the functionality to corrupt a specific file system +block via the "zap_block" command. + +Add to debugfs the functionality to print out a hex dump of a block in +the file system via the "block_dump" command. + +Add to debugfs the functionality to manipulate the extent tree +directly via the "extent_open" command. + +Fixed debugfs's mknod command so that it updates the block group +statistics. + +Fix e2fsck so it can detect and fix inconsistencies in the interior +nodes of an inode's extent tree. + +Fix a potential memory corruption failure in e2fsck's error path if +the call to ext2fs_open2() fails. + +Fix e2fsck if its logging function is enabled in e2fsck.conf, and the +resulting file name for the log file is longer than 100 bytes, that it +properly handles this situation instead of crashing. + +E2fsck will now report the amount of memory that it attempted to +allocate when a memory allocation request fails, to make it easier to +track down the problem. + +Fix mke2fs's handling of the mmp_update_interval option. (Addresses +Lustre Bug: LU-1888) + +E2image can now include all data blocks in the e2image output file +when the user specifies the -a option. + +If e2fsprogs is compiled without --enable-quota, make sure that +tune2fs can not turn on the feature for new-style quota support, since +afterwards, none of the e2fsprogs tools will be willing to touch that +file system. + +Optimize e2fsck's so that it uses much less CPU for large file +systems. This can result in significant speedups, especially on +CPU-constrained systems. This was primarily done by optimizing +libext2fs's bitmap functions. (Addresses Google Bug: #7534813) + +Fix debugfs's htree command so that all its messages are sent through +the pager. + +Fixed debugfs's "dump_file" and "cat" functions work correctly +on file systems whose block size is greater than 8k. + +Fix e2freefrag so it works on 64-bit file systems, and so it uses much +less memory. (Addresses Google Bug: 7269948) + +Update the spd_readdir.c file in the contrib directory to include some +additions which were made in 2008 that didn't get folded into the +version which we checked into the e2fsprogs source tree. These +enhancements include thread safety, support for readdir64_r(), and +safe_getenv() support in case spd_readdir.so is used for setuid binaries. + +Update Czech, Dutch, French, German, Polish, Swedish, and Vietnamese +translations + +Add a command to debugfs to create symlinks. + +Document the bigalloc feature in the mke2fs man page. (Addresses +Debian Bug: #669730) + + +Programmer's Notes +------------------ + +Fix gcc -Wall nits. + +Fix a spelling typo in the libext2fs texinfo documentation. + +Change the output from "make check" so that tools such as emacs's "M-x +compile" does not mistake the output as containing a compiler error. + +Export two new functions from libext2fs: ext2fs_extent_node_split() +and ext2fs_extent_goto2(). + +The ext2fs_extents_fix_parents() was fixed so it does not modify the +location of the extent handle if its current location is at an +interior node, rather than a leaf node of an inode's extent tree. + +Add a regression test to assure that e2fsck can correctly fix an +inconsistent interior node in an inode's extent tree. + +The ext2fs_{mark,unmark,test}_block_bitmap_range2() functions now +correctly support bigalloc file systems which use store block usage +information in units of clusters. + +Fixed the help text in the configure script for --enable-quota. + +The m68k-specific bitops code has been removed since they were +incorrectly treating bit numbers with the high bit set as signed +integers. Furthermore, modern compilers do a good enough job +optimizing the generic code there is no point in having the m68k +specific asm statements. + +Fixed how we link the test programs so they always use the static +libraries, so that we test using the libraries which we have just +built. + +Update config.guess and config.sub to the latest versions from the GNU +project. + +Fixed the com_err.texinfo file so that it can produce a valid +postscript/pdf printed output. + +Add a regression test which checks debugfs's ability to create +symlinks, named FIFO's, and device nodes. + +Add a function ext2fs_symlink(), which creates symlinks to the +libext2fs library. + +Add debugging code so we can test old kernel interfaces for online +resize to resize2fs. This backwards compatibility checking is keyed +off of the RESIZE2FS_KERNEL_VERSION, which is designed to allow us to +test the functionality of the kernel's older resize ioctls without +needing to install an old version of resize2fs, and to also test a +modern resize2fs's ability to work with older kernels without having +to install an older version of the kernel. + + +E2fsprogs 1.42.6 (September 21, 2012) +===================================== + +When mke2fs creates file systems with lazy itable initialization, the +progress updates for writing the inode table happens so quickly that +on a serial console, the time to write the progress updates can be the +bottleneck. So mke2fs will now only update its progress indicators +once a second. + +Resize2fs will skip initializing the inode tables if the kernel +supports lazy_itable_init, which speeds up growing off-line growth of +uninit_bg file systems significantly. Resize2fs will now also +correctly set the itable_unused field in the block group descriptor to +speed up the first e2fsck after the file system is grown. + +Resize2fs has been fixed so that on-line resizing of meta_bg file +systems work correctly. This is needed to grow file system which are +larger than 16T. + +Resize2fs will now correctly handle resizing file systems to 16TB on +32-bit file systems when "16TB" is specified on the command line. + +Fix mke2fs so that it will be careful to set the reserved blocks ratio +larger than 50%; this can happen when creating small file systems and +when the last block group is dropped because there are not enough +blocks to support the metadata blocks in the last block group. + +Fixed spelling mistake in debugfs's help message. + +Fixed a potential seg fault in e2fsck when there is an I/O error while +reading the superblock. + +Fixed various Debian Packaging Issues (Addresses Debian Bug #677497) + +Updated/fixed various man pages. (Addresses Sourceforge Bug: +#3559210) + +Programmer's Notes +------------------ + +The configure option --enable-relative-symlink was broken so that it +needed to be --enable-symlink-relative-symlinks. We will support both +for at least two years, but then the wrong configure option will be +removed. + +Fixed a regression introduced in 1.42.5 so the link order for +e2fsprogs' libraries will be correct for both static and shared +linking. (Addresses Sourceforge Bug: #3554345) + +Add support for e2fsprogs to be compiled using clang/LLVM. + +Fix portability problems on non-Linux systems: avoid compile failures +on systems that don't have malloc.h + +Fix f_mmp regression test suite so that debugfs gets killed if the +test is interrupted. + + + +E2fsprogs 1.42.5 (July 29, 2012) +================================ + +Fixed a bug with mke2fs where if there is only 8 inodes per block +group, the calculation of the number of uninitialized inodes in the +first block group would go negative. This resulted in "mke2fs -N 256 +-t ext4 /tmp/foo.img 256m" trying to write so many blocks that /tmp +would run out of space. (Addresses Sourceforge Bug: #3528892) + +Fixed a bug in how e2fsck would uniquify directory entry names. +(AddressesSourceforge Bug: #3540545) + +Previously, e2fsck would only allow a mounted file system to be +checked if it was the root file system and it was mounted read-only. +Now it will allow any file system mounted read-only to be checked if +the -f option is specified. This makes it easier to test how e2fsck +handles checking file systems which are mounted without having to test +on the root file system. + +Fixed a problem if e2fsck where if the root file system is mounted +read-only, e2fsck would not clear an error indication in the journal +superblock. Combined with a kernel bug, this would cause the e2fsck +to check the file system after every single boot. + +The e4defrag program can now handle device symlinks, such as +/dev/mapper/testvg-testlv, instead of insisting on a less +human-friendly name such as /dev/dm-2. (Addresses Red Hat Bugzilla: +#707209) + +Fixed filefrag so it will not crash with a segfault on files from a +virtual file system such as /proc. (e.g., "filefrag +/proc/partitions") + +Fixed filefrag so that it correctly reports the number of extents. +(Addresses Red Hat Bugzilla: #840848) + +Fixed a file descriptor leak in logsave which could cause it to hang. +(Addresses Debian Bug: #682592) + +Fixed e2fsck so that the file system is marked as containing an error +if the user chooses not to fix the quota usage information. + +Fixed tune2fs so that it correctly removes the quota feature when the +last quota inode is removed. + +Fix tune2fs so that after removing a quota inode, the block bitmap is +updated; otherwise, e2fsck would complain after running 'tune2fs -O +^quota <dev>'. + +Fix tune2fs so that when converting a file system from using legacy +quota files to the new quota file system feature with hidden quota +files, the accounting for these files is handled correctly so that +e2fsck doesn't complain. + +Improved e2fsck's verbose reporting statistics, and allow the more +verbose reporting to be enabled via /etc/e2fsck.conf. + +Fixed various Debian Packaging Issues (Addresses Debian Bug #678395) + +Updated/fixed various man pages. (Addresses Debian Bugs: #680114) + + +Programmer's Notes +------------------ + +Fixed portability problems on other operating systems (e.g., Hurd and +FreeBsd) caused by the attempted inclusion of <sys/quota.h>. + +Make sure that shared libraries link with the shared libraries built +in the build tree, instead of the system provided libraries. +Previously, libraries and executables were linked with the system +libraries if present, and possibly using static archives instead of +shared libraries. This was also problematic since if libext2fs.so is +linked with a static libcom_err.a from system, the build system would +attempt to link without -lpthread. (Addresses Sourceforge Bug: +#3542572) + + +E2fsprogs 1.42.4 (June 12, 2012) +================================ + +Fixed more 64-bit block number bugs (which could end up corrupting +file systems!) in e2fsck, debugfs, and libext2fs. + +Fixed e2fsck's handling of the journal's s_errno field. E2fsck was +not properly propagating the journal's s_errno field to the superblock +field; it was not checking this field if the journal had already been +replayed, and if the journal *was* being replayed, the "error bit" +wasn't getting flushed out to disk. + +Fixed a false positive complaint by e2fsck if all of the extents in +the last extent tree block are uninitialized and located after the end +of the file as defined by i_size. + +The dumpe2fs will now display the journal's s_errno field if it is +non-zero, and it will also display the journal's 64-bit feature flag +if present. + +Fix e2fsck so that it always opens the device file in exclusive mode +when it might need to modify the file system, and never if the -n +option is specified. (Previously, there were a few corner cases where +it might get things wrong in either direction.) + +E2fsck now correctly truncates or deallocates extent-mapped inodes on +the orphan list. The root cause was a bug in libext2fs's block +iterator which could end up skipping an extent when the last block in +an extent is removed, causing the current extent to be removed from +the extent tree. + +E2fsck now correctly sets the global free block and inode counts when +truncating or removing inodes on the orphan list in preen mode. +Previously, it would leave these values would be set incorrectly, +which is largely a cosmetic issue since the kernel no longer pays +attention to those fields, but it can cause spurious complaints in +subsequent e2fsck runs. + +Fix i_blocks accounting when the libext2fs library needs to add or +remove an extent tree block on bigalloc file systems. + +The lsattr and chattr programs now support the No_COW flag for the +benefit of btrfs. + +Debugfs now interprets date strings of the form @ddd as ddd seconds +after the beginning of the epoch. This is handy when setting an inode +number into the d_time field when debugging orphan list handling. + +Fix a precedence bug with built-in quota support which might result in +e2fsck paying attention to the quota inode field even if the built-in +quota feature flag is not set. Fortunately, in practice that +superblock field should be zero for non-built-in quota file systems, +so it's unlikely this bug would have caused problems. + +Updated/fixed various man pages. (Addresses Debian Bugs: #674453, +#674694) + +Programmer's Notes +------------------ + +The regression test suite can now run the integration tests in the +tests directory in parallel, via "make -jN check". + +Add new test, f_zero_extent_length which tests e2fsck's handling of +the case where all of the extents in the last extent tree block are +uninitialized extents after i_size. + +Add a new test, f_jnl_errno, which checks handling of an error +indication set in the journal superblock. + +Fix the test f_jnl_64bit so that it properly checks e2fsck's handling +of a 64-bit journal. + +Add two tests, f_orphan_indirect_inode and f_orphan_extent_inode which +tests e2fsck's handling of orphan inodes in preen mode, and truncation +of extent inodes on the orphan list. + +Fixed more OS X portability issues. + + +E2fsprogs 1.42.3 (May 14, 2012) +=============================== + +Fix a bug in the Unix I/O manager which could cause corruption of file +systems with more than 16TB when e2fsprogs is compiled in 32-bit mode +(i.e., when unsigned long is 32-bits). Also fix a bug which caused +dumpe2fs to incorrectly display block numbers > 32-bits. + +Improve the support for integrated quota files (where quota is a first +class supported feature using hidden files in the ext4 file system). +Previously the quota file was getting rewritten even when it was not +necessary, and e2fsck would erroneously try to hide quota files which +were already hidden. + +Quiet complaints in e2fsck when the total free blocks or inodes are +incorrect in the superblock after an system crash, since we don't +update nor depend on the superblock summaries at each commit boundary. + +Fixed a regression introduced in 1.42.2 which would cause applications +outside of e2fsprogs which did not pass the EXT2_FLAG_64BIT (and so +would were still using the legacy 32-bit bitmaps) to crash. This was +due to missing 32-bit compat code in side the function +ext2fs_find_first_zero_generic_bmap(). (Addresses Red Hat Bugzilla: +#808421) + +Fix a bug which would cause mke2fs to fail creating the journal if +/etc/mtab and /proc/mounts are missing. (Addresses Sourceforge Bug: +#3509398) + +Updated/fixed various man pages. + +Update Czech, Dutch, French, German, Polish, Swedish, and Vietnamese +translations + +Fixed various Debian Packaging issues. + + +Programmer's Notes +------------------ + +Change the nonsensically wrong types in the function signature of the +inline function ext2fs_find_first_zero_block_bitmap2(). This was +caused by a cut and paste error; fortunately no code in e2fsprogs used +this inline function, and there are any users of this functions +outside of e2fsprogs. + +Add support for systems which have valloc(), but which do have +posix_memalign() nor memalign() (such as MacOS 10.5). + +Refactor and clean up the allocation of aligned buffers for Direct I/O +support. Previously some allocations were requesting a greater +alignment factor that what was strictly necessary. Also optimize +reading and writing bitmaps using Direct I/O when the size of the +bitmap did not fully cover the file system blocksize. + +Reserve the codepoints for the INCOMPAT features LARGEDATA and +INLINEDATA. + +Improved the regression test suite by adding some new integration +tests (f_jnl_32bit, f_jnl_64bit) which detect breakage of the on-disk +jbd2 format, as well as f_eofblocks which tests the new handling of +uninitialized and initialized blocks beyond i_size. Also add a new +unit test which verifies 32-bit bitmaps support and the new +find_first_zero primitives. + +Add a few dependencies to fix parallel (make -j) builds. + +Removed bash'isms which were breaking the regression test suite on +systems where /bin/sh is not bash. + +The config.guess and config.sub have been updated to the 2012-02-10 +version. + +Fix a portability problem caused by assuming the present of mntent.h +means that setmntent() exists. Instead, explicitly test for this in +the configure script. + +If the sys/signal.h header file does not exist, don't try to include +it, since it's not available on all systems. + +Add support for systems that do not support getpwuid_r() + +The configure script now supports a new option, +--enable-relative-symlinks, which will install relative symlinks for +the ELF shared library files. (Addresses Sourceforge Bug: #3520767). + +When building BSD shared libraries make sure the LDFLAGS variable is +passed to the linker. Fixing this allows, for example, e2fsprogs to +be built in 32-bit mode on Mac OS X Lion (Addresses Sourceforge Bug: +#3517272) + +Fix gcc -Wall nitpicks + + +E2fsprogs 1.42.2 (March 27, 2012) +================================= + +The resize2fs program uses much less CPU and is much faster for very +large file systems. (Addresses Debian Bug: #663237) + +The seti and freei commands in debugfs can now take an optional length +argument to set and clear a contiguous range of inodes. + +E2fsck will now make explicit checks for the EOFBLOCKS_FL, since we +plan to remove support for it from the kernel file system driver. It +really wasn't very useful and was causing more problems than it +solves. Since e2fsck will complain if inodes that should have +EOFBLOCKS_FL do not have the flag set, we are going to remove this +check from e2fsprogs first, and then only remove the flag from the +kernel much later. + +The mke2fs program can now use direct I/O via "mke2fs -D". This will +slow down the mke2fs, but it makes it more polite on a loaded server +by limiting the amount of memory that gets dirtied by mke2fs when it +is using buffered I/O. + +E2fsck was needlessly closing and re-opening the file system as a side +effect of adding Multiple Mount Protection (MMP). This isn't +necessary for non-MMP file systems, so drop it. + +Print errors returned by ext2fs_open2() and ext2fs_check_desc() so we +can more easily diagnose memory allocation failures caused by +insufficient memory. E2fsck will now abort if there are memory +allocation failures when the file system is initially opened and +during the block group descriptor checks. (Addresses Google Bug: +#6208183) + +If there are incorrect block group checks, e2fsck will now report the +incorrect and corrected checksum values. + +The e2fsck program can now write log files containing the details of +the problems that were found and fixed directly, via configuration +parameters in /etc/e2fsck.conf. + +Added the ability to limit the number of messages reported by e2fsck +for a given problem type. This avoids a potential bottleneck if there +is a serial console which can cause a boot sequence to take a long +time if e2fsck needs to report many, many file system errors. + +The dumpe2fs, debugfs, and tune2fs now use rbtree bitmaps, which cause +them to use much less memory for large file systems. + +The dumpe2fs program will now print the expected block group checksum +if it is incorrect. This helps to diagnose problems caused by +incorrect block group checksums. + +E2fsck now checks for extents with a zero length, since the kernel +will oops if it comes across such a corrupted data structure. (See +https://bugzilla.kernel.org/show_bug.cgi?id=42859) + +E2fsck has a number of bugs relating to discard that have been fixed. +(1) Fixed a bug which could cause e2fsck to discard portions of the +inode table which were actually in use. (2) E2fsck will now avoid +using discard if the block device doesn't zero data on discard, since +otherwise this could cause problems if the file system gets corrupted +in the future. (3) E2fsck will now avoid using discard when it is run +in read-only mode. (4) Fixed a bug which caused e2fsck to not issue +discards in the last block group. + +E2fsck's CPU utilization in pass 5 has been optimized, which will +speed up e2fsck slightly. + +E2image will now skip copying uninitialized bitmap and inode table +blocks. + +Fixed mke2fs -S so it does not corrupt the first block group's +information. + +E2fsck will now check the new sysfs interface to determine if we are +using the battery or AC mains. (Addresses SourceForge Bug: #3439277) + +Updated/fixed various man pages. (Addresses Debian Bug: #665427) + +Fixed various Debian Packaging issues. (Addresses Debian Bug: #665885) + +Programmer's Notes +------------------ + +Fixed various portability issues for non-Linux systems, particularly +MacOS X, as well as Linux systems running with the just-released glibc +2.15. + +Fix file descriptor leak in ext2fs_close() if the file system with +uninit_bg is opened read/only with a backup superblock. (Addresses +SourceForge Bug: #3444351) + +Fixed an invalid return in a non-void function in the quota code. +(Addresses SourceForge Bug: #3468423) + +Fixed the debian rules file so that the calls to dpkg-buildflags works +when the shell is dash. + +The debian package build now uses V=1 so that there is more +information about potential build failures in debian build logs. + +If the uninit flags get cleared by functions such as +ext2fs_new_inode() or ext2fs_new_block2(), we now make sure the +superblock is marked dirty and the block group descriptor checksum is +updated if necessary. + +The debian rules file will now try to load debian/rules.custom of it +exists. This file can skip various builds for speed reasons if there +is no need for the e2fsck-static or udeb packages. Available +customizations in the rules file includes SKIP_STATIC=yes, +SKIP_BF=yes, and SKIP_DIETLIBC=yes. + +In addition, if the file misc/mke2fs.conf.custom.in exists in the +source tree, it will be used instead of the standard misc.conf file in +the upstream sources. This makes it easier for Debian-derived systems +to distribute a custom mke2fs.conf file without having to worry about +merge issues if future versions of e2fsprogs makes changes in the +upstream default version of mke2fs.conf. + + +E2fsprogs 1.42.1 (February 17, 2012) +=================================== + +The mke2fs and e2fsck now use significantly less memory when creating +or checking very large file systems. This was enabled by adding +extent-based bitmaps which are stored using a red-block tree, since +block and inode allocations tend to be contiguous. + +The command mke2fs -S is used as a last ditch recovery command to +write new superblock and block group descriptors, but _not_ to destroy +the inode table in hopes of recovering from a badly corrupted file +system. So if the uninit_bg feature is enabled, mke2fs -S will now +set the unused inodes count field to zero. Otherwise, e2fsck -fy +after using mke2fs -S would leave the file system completely empty. + +Since mke2fs recognizes mke3fs in argv[0] to mean "mkfs.ext3", also +honor "mke4fs" to work the same as "mke2fs.ext4", since RHEL5 has +installed an mke2fs binary using that name. + +The usage and help messages for the -G, -t and -T options in mke2fs +have been fixed. + +If e2fsck needs to use the backup group descriptors, the +ext2fs_open2() function clears the UNINIT bits to ensure all of the +inodes in the file systems get scanned. However, the code which reset +the UNINIT flags did not also recalculate the checksum, which produced +many spurious (and scary) e2fsck messages. This has been fixed by +resetting checksums when the UNINIT bits are cleared. + +Relax a check in e2fsck which required that the block bitmap to be +initialized when the inode bitmap is in use. This will allow us to +eventually eliminate code from the kernel which forcibly initialized +the block bitmap when the inode bitmap is first used, requiring an +extra journal credit and disk write. (Addresses Google Bug: #5944440) + +Make sure rdebugfs (which may be installed setuid or setgid disk) does +not honor environment variables if euid != uid or egid != gid. + +Debugfs's ncheck command has been optimized and now is much more +robust with faced with corrupted file systems. The ncheck command +also now has a -c option which will verify the file type information +in the directory entry to see if matches the inode's mode bits. This +is extremely useful when trying to use debugsfs to determine which +parts of the file system metadata can be trusted. + +E2image will try to use ftruncate64() to set the i_size for raw +images, instead of writing a single null byte. This avoid allocating +an extra block to the raw image, for those file systems and/or +operating systems that support this. (Linux does.) In addition, fix +a logic bug that caused the file to not be properly extended if the +size of the last hole was exactly an multiple of a megabyte. + +Fixed a bug in resize2fs where for 1k and 2k file systems, where +s_first_data_block is non-zero, this wasn't taken into account when +calculate the minimum file system size for use with the -M option. + +Fixed the badblocks program to honor the -s flag when in read-only -t +mode. (Addresses Debian Bug #646629) + +Update Czech, Dutch, French, Polish, and Swedish translations from the +Translation Project. + +Fixed various Debian Packaging issues so that dpkg-buildflags is used +if present, which allows e2fsprogs to be built with security hardening +flags. (Addresses Debian Bugs: #654457) + +Programmer's Notes +------------------ + +Fix a bug in ext2fs_clear_generic_bmap() when used for 32-bit bitmaps. +This was only an issue for programs compiled against e2fsprogs 1.41 +that manipulate bitmaps directly. (Addresses Sourceforge Bugs: +#3451486) + +The libext2fs library now uses sysconf() to fetch the page size, instead +of the deprecated getpagesize(). + +The ext2fs_get_pathname() function will return a partial path if an a +directory in the path is not a directory, displaying it as an inode +number in angle brackets instead of giving up and displaying an error. +This is much more helpful when a user is trying to debug a corrupted +file system. + +Codepoints for the RO_COMPAT_REPLICA feature has been reserved. + +Added a new library function, ext2fs_file_get_inode_num(), for use by +fuse2fs. + +Fixed a bug in ext2fs_file_set_size2() so that when it is truncating a +file, it actually works. + +The block iterator now properly honors the BLOCK_ABORT flag for +extent-based flags. Previously, it didn't, which generally made code +be less efficient, but it could cause bugs in ext2fs_link(), for +example, by causing it to insert multiple directory entries. + +Fixed an (harmless other than causing a compiler warning) use of an +uninitialized variable in e2fsck's MMP code. + + +E2fsprogs 1.42 (November 29, 2011) +================================== + +This release of e2fsprogs has support for file systems > 16TB. Online +resize requires kernel support which will hopefully be in Linux +version 3.2. Offline support is not yet available for > 16TB file +systems, but will be coming. + +This release of e2fsprogs has support for clustered allocation. This +reduces the number of block (now cluster) bitmaps by allocating and +deallocating space in contiguous power-of-2 collections of blocks, +which are called clustered. This is a file system level feature, +called 'bigalloc', which must be enabled when the file system is +initially formatted. It is not backwards compatible with older +kernels. + +Added support for the Multi-Mount Protection (MMP) feature. + +E2fsck more efficiently uses scratch files for really big file +systems. (This is a feature that has to be turned on explicitly; see +[scratch_files] in the e2fsck.conf man page.) + +Fix a bug in e2fsck where if the free blocks and inodes counts are +incorrect, e2fsck would fix them without printing an error message. +This would cause a "*** FILE SYSTEM WAS MODIFIED ***" message without +any explanation of what was fixed. + +E2fsck will no longer attempt to clone an extended attribute block in +pass1b handling if the file system does not support extended +attributes. + +E2fsck will be more careful accidentally asking the user to continue +if the file system is mounted, so that an escape sequence won't cause +a false positive. (Addresses Debian Bug: #619859) + +E2fsck now uses less cpu time in pass 5 when large portions of the +bitmaps are uninitialized. + +E2fsck will no longer segfault when a corrupted file system has a bad +extent, and removing it leads to a block needing to be deallocated. +(Addresses SourceForge Bug: #2971800) + +E2fsck will catch termination signals (segfaults, bus errors, sigfpe) +and print debugging information to make it easier to find potential +problems. + +E2fsck will check to see if the bad block inode looks insane, and will +skip trying to use if it certain fields which should be zero look +non-zero. This is to avoid a corrupted bad block inode causing e2fsck +to get confused and do more harm than good. + +If e2fsck modifies certain superblock fields which the kernel doesn't +look at, it will now mark the superblock as dirty without marking the +file system as changed. This avoids signaling the init scripts that +a reboot is necessary, since the kernel isn't going to look at those +fields, so it won't care if they have been changed. + +Fixed a bug in the libext2fs library (in the binary search routine of +the icount abstraction) that could (very, very rarely) cause e2fsck to +die in the middle of pass 1 or pass 2 processing. + +E2fsck will not try to do a discard operation if the -n option was +specified on the command line. + +E2fsck now supports an extended "discard" option which will cause +e2fsck to attempt discard all unused blocks after a full, successful +file system check. + +E2fsck will check for the bad block inode to make sure it looks sane +before trusting it, to avoid causing more harm than good to the file +system. + +E2fsck now returns additional status bits in its exit code if it +aborts early in the e2fsck run. + +E2fsck now correctly calculates the maximum file size in the case of +the huge_file file system feature enabled without extents. + +The mke2fs and e2fsck programs now tries to use the punch hole command +as a "discard" when operating on normal files. + +The e2image program now supports the qcow2 format, which is a more +efficient way of capturing file system dumps. + +Mke2fs now supports the [devices] stanza in mke2fs.conf which allows +per-device defaults to be specified in the configuration file. + +Mke2fs now supports the reserved_ratio relation in the [defaults] and +[fs_types] section in mke2fs.conf. + +Mke2fs now creates extent-mapped directories for the root and +lost+found directories. + +Mke2fs will skip zero'ing the journal if the extended option +"lazy_journal_init" is specified. This can save a lot of time, but it +does add a small amount of risk if the system crashes before the +journal is overwritten entirely once. It is especially useful for +testing. + +Mke2fs will now create file systems that enable user namespace +extended attributes and with time- and mount count-based file +system checks disabled. + +Mke2fs will not set a stride or strip size of one block based on block +device attributes obtained from sysfs. + +Mke2fs now displays a progress report during the discard process. + +Mke2fs now handles extreme file system parameters correctly which +previously caused the inodes per group to drop below 8, leading to a +segfault. (The inodes per group must be a multiple of 8, but the code +didn't correctly deal with an inodes per group count less than 8.) + +Mke2fs and tune2fs previously would give an error if the user tried +setting the stride and stripe-width parameters to zero; but this is +necessary to disable the stride and stripe-width settings. So allow +setting these superblock fields to zero. (Addresses Google Bug: +#4988557) + +Mke2fs now gives a warning if the auto-detected block size exceeds the +system's page size. + +If the enable_periodic_fsck option is false in /etc/mke2fs.conf (which +is the default), mke2fs will now set the s_max_mnt_count superblock +field to -1, instead of 0. Kernels older then 3.0 will print a +spurious message on each mount then they see a s_max_mnt_count set to +0, which will annoy users. (Addresses Debian Bug: #632637) + +The default mke2fs.conf now has entries for "big" and "huge", which +are needed for very big file systems. + +The resize2fs program now has support for a new online resize ioctl +that can support file systems > 16TB, once it arrives in v3.x kernels. + +Fixed bug which caused resize2fs to fail when shrinking an empty file +system down to its minimal size. (Addresses Sourceforge Bug #3404051) + +Fixed tune2fs's mount options parsing. (Addresses Debian Bug: #641667) + +Allow tune2fs to remove external journals if the device can not be +found. + +Debugfs's icheck will now correctly find inodes which use the +searched-for block as an extended attribute block. + +Debugfs now has a new "punch" command which remove blocks from the +middle of an inode. + +Debugfs now has a new "e2freefrag" command which analyzes the free +space fragmentation of the file system, using the same code as the +e2freefrag program. + +Debugfs now has a "filefrag" command which displays information about +a file's fragmentation. + +Add support to build a metadata-only, read-only, stripped-down version +of debugfs called rdebugfs. + +Fixed a potential stack overrun bug in debugfs. + +The badblocks program now correctly recovers from I/O errors when +direct I/O is being used. The badblocks command now also supports a +-B option which forces the use of buffered I/O, and the -v option will +provide a more detailed breakdown of read, write, and failed +comparison errors. + +Added e4defrag tool which uses the EXT4_IOC_MOVE_EXT ioctl. + +Added support for journals larger than 2GB. + +Support using both hard links and symlinks when installing e2fsprogs. + +Add overflow checking to tune2fs -i's fsck interval, which must fit in +a 32-bit field. + +The debugfs command now has a new 'blocks' command which prints out +data blocks of a particular inode in a format which is useful for +scripting. + +Filefrag will report 0 extents correctly in verbose mode. (Addresses +RedHat Bugzilla: #653234) + +Filefrag has been fixed so its -v report prints the correct expected +block number (previously there had been an off-by-one error). In +addition, it will now display the number of contiguous extents when -v +is not specified. This makes it consistent with the number of extents +printed when the -v option was specified. In addition, the number of +contiguous extents is far more interesting/useful than the number of +physical extents for very large files. (Addresses Debian Bug: +#631498, #644792) + +Logsave's usage message has been fixed. (Addresses Debian Bug: +#619788) + +Avoid an infinite loop in ext2fs_find_block_device() if there are +symlink loops in /dev caused by a buggy udev. + +Added a useful "fallocate" program to the contrib directory. + +Fixed an ABI compatibility problem in libext2fs which broke the dump +program. Also added back some macros which dump needed so it could +compile against the latest version of ext2_fs.h (Addresses Debian Bug: +#636418) + +Fixed parsing of MNTOPT_ options for tune2fs and debugfs (Addresses +Debian Bug: #641667) + +Added internationalization support for libcom_err error table strings. + +Fixed various spelling mistakes found in various output strings found +by I18N translators. + +Update translations: French, Chinese, Germany, Indonesian, Swedish, +Vietnamese, Polish, Dutch, Czech. (Addresses Debian Bugs: #520985, +#620659) + +Fixed various Debian Packaging issues. (Addresses Debian Bugs: +#614662, #632169, #641838, #627535, #629355) + +Updated/clarified man pages. (Addresses Debian Bugs: #639411, +#642193, #634883) + +Programmer's Notes +------------------ + +Initial support for quota as an integrated feature, where the quota +files are hidden system files that are automatically maintained by +e2fsck is present, although disabled by default. It must be enabled +by using the configure option --enable-quota. + +Reserved the on-disk fields for the metadata checksum and snapshot +features, which are currently in development. + +The ext2fs library now has the new functions ext2fs_punch(), +ext2fs_get_memzero() and ext2fs_file_get_inode(). + +The ext2fs library now has support for calculating the crc32c checksum +(via the new functions ext2fs_crc32c_be and ext2fs_crc32c_le). + +The I/O manager now supports the discard operation. + +Reserved file system code points for new 1st class quota feature. + +Shortened the compilation lines by moving the autoconf defines to +a config.h header file. + +Fixed a potential free of an uninitialized pointer in +ext2fs_update_bb_inode(). + +Fixed miscellaneous gcc -Wall and coverity warnings. + +Fixed portability issues for Mac OS X, Hurd, and FreeBSD. + +Fixed a build failure when OMIT_COM_ERR is defined. + +Improved error checking and fixed memory leaks caused by error return +paths. + +Add ext2fs_flush2() and ext2fs_close2() which takes a flag to allow +the fsync() to be skipped. + +Added a test for extent-mapped journals by mke2fs and tune2fs. + +Added a test for creating a large (over 4GB) journal using mke2fs. + +Added a test to make sure the inode size remains constant. + +The regression test script now prints the list of which tests failed. + +The regression test system now uses /tmp for its scratch files, which +is often a tmpfs mounted file system and hence much faster. + +The i_e2image test was fixed so it works with valgrind. + +Tests that rely on debugfs are now skipped if debugfs wasn't built. + +Fixed the dependencies for "make check" so all required dependencies +are built before running the regression tests. + +A link to com_err.h is installed in $(includedir) during a "make install". + +The po/*.gmo files are automatically rebuilt if they are missing or +out of date. This helps out Debian packaging. + +Allow ext2fs_get_memalign() to compile on systems that don't have +posix_memalign(). + +Fixed a namespace leak in libext2fs (tdb_null). + |